{"id":"CVE-2018-18751","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-18751","generatedAt":"2026-10-28T21:54:25.084Z","title":"An issue was discovered in GNU gettext 0.19.8.","description":"An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt.","published":"2018-10-29T12:29:10.000Z","lastModified":"2026-06-17T01:47:50.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-415"],"affected":["gnu/gettext","canonical/ubuntu linux","redhat/enterprise linux"],"epss":{"score":0.04257,"percentile":0.91012,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (4.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:3643","source":"cve@mitre.org"},{"url":"https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefree","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruption","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3815-1/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3815-2/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:3643","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefree","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruption","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3815-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3815-2/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-18751","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}